The first file on the signal registry began with signal patterns, maintenance cards and changes submitted by route crews. The city then checked the source, heard affected residents and sent a second office to repeat the count.
The current Year first, first seep window 3 file records 65 signals with a dated source and a matching branch label; the previous window records 62. The longer sequence makes the change visible, while each count remains tied to its own dates.
A turning point was the observation that two adjacent branches use a different pause after the second knock. It narrowed the discussion from a general claim to a question about how the rule works at the site.
The registry follows the written pattern. Route crews say an echo changes how the pause is heard at the junction. The shared record is larger than it was at the start, although the parties still assign it different weight.
Anew route file opens with an entrance, branch and service named. The Year first, first seep window 3 file remains open for its scheduled decision. The keeper will test both signals from the approach path and the branch interior.
